We need a way to use black and white images as a Layer Mask. I am trying to use some grain/noise images as a matte, but my final image needs an alpha channel. Currently, I have to use PS to convert my BW images to an image with an alpha channel to use. The workflow isn't very convenient. I have attached the type of image that I would like to use as a Layer Mask. You can see that creating a selection from the image would be impossible.